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Search: id:A124691
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| A124691 |
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LCM { prime(n)+1, prime(n+1)+1 } / 2. |
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+0
1
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| 6, 6, 12, 12, 42, 63, 90, 60, 60, 240, 304, 399, 462, 264, 216, 270, 930, 1054, 612, 1332, 1480, 840, 630, 2205, 2499, 2652, 1404, 2970, 3135, 3648, 2112, 1518, 4830, 1050, 5700, 6004, 6478, 3444, 2436, 2610, 8190, 8736, 9312, 9603, 9900, 5300, 5936, 6384
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=(1/2)*LCM(1+A000040(n);1+A000040(1+n))
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MATHEMATICA
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f[n_] := LCM [Prime[n] + 1, Prime[n + 1] + 1]/2; Table[f@n, {n, 48}] - Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 28 2007
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CROSSREFS
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Sequence in context: A028317 A055665 A127402 this_sequence A112437 A122223 A046625
Adjacent sequences: A124688 A124689 A124690 this_sequence A124692 A124693 A124694
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KEYWORD
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easy,nonn
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AUTHOR
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Philippe LALLOUET (philip.lallouet(AT)wanadoo.fr), Jun 26 2007
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 28 2007
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